Bump next from 15.0.3 to 15.1.2 in /nextjs/next-wagmi-app-router

Bumps [next](https://github.com/vercel/next.js) from 15.0.3 to 15.1.2.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.0.3...v15.1.2)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

nextjs/next-wagmi-app-router/package.json

@@ -12,7 +12,7 @@
     "@reown/appkit": "1.6.3",
     "@reown/appkit-adapter-wagmi": "1.6.3",
     "@tanstack/react-query": "^5.59.20",
-    "next": "15.0.3",
+    "next": "15.1.2",
     "react": "18.3.1",
     "react-dom": "18.3.1",
     "viem": "^2.21.44",